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Suppose that 17% of the people in a large city have used a hospital emergency room in the past year. If a random sample of 165 people from the city is taken, approximate the probability that more than 30 used an emergency room in the past year. Use the normal approximation to the binomial with a correction for continuity.Round your answer to at least three decimal places. Do not round any intermediate steps.
What is the probability that among 10 true hypertensives at least 50% are being treated appropriately and are complying with this treatment?
Determine what analysis would you do on each problem (ie, one-sample z-test, one-sample t-test, proportion test, two-sample independent t-test, or paired test)?
A chain of fast-food restaurants offers an instant-winner promotion. Drink cups and packages of French fries come with peel-off coupons. According to the promotion, 1 in 20 packages is a winner.
Customers arrive at the Veryfast Bank as a Poisson process of rate λ customers per minute. Each arriving customer is immediately served by a teller. After being served, each customer immediately leaves the bank.
the scholastic aptitude test sat is standardized to be normally distributed with a population mean of 500. a parent is
let x be the number of trials required to obtain a success where p is the probability of success on each trial. the
question the average annual total return for u.s. diversified equity mutual funds from 1999 to 2003 was 4.1
leisure time in gallup poll 1010 adults were randomly selected and asked if they were satisfied or dissatisfied with
negligent treatment-caused injury
a genetic experiment involving peas yielded one sample of offspring consisting of 414 green peas and 153 yellow peas.
suppose that you are in a class of 33 students and it is assumed that approximately 15 of the population is
One characteristic of billiard balls is their elasticity - the bounce they get when striking one another. A manufacturer of billiard balls is testing three additives to the basic plastic.
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